As pot cores are one of the oldest core designs. They are available in a wide range of worldwide standardized sizes - according to IEC 62317-2. Originally produced for ﬁlter inductors. pot cores are becoming increasingly popular in power applications. With the introduction of EMC legislation, electromagnetic screening has become a prime concern in core selection. The pot core's shape almost completely encloses the windings and whilst this can be a hindrance for access purpose, it provides excellent screening.

Dimensional Details

Part No.

Core

Amm

Bmm

Cmm

Dmm

Emm

Fmm

Effective Parameters

∑l/Amm-1

lemm

Aemm2

Vemm3

ApproxWeight/Setgms/Set

29-290-

PC 7×4

7.35-0.25

5.8+0.20

3-0.1

1.4+0.05

2.8+0.2

4.2-0.1

1.43

10

7

70

0.5

29-350-

PC 9×5

9.30.3

7.5+0.25

3.9-0.2

2+0.1

3.6+0.3

5.4-0.2

1.25

12.2

9.8

120

0.8

29-400-

PC 11×7

11.3-0.4

9+0.4

4.7 -0.2

2+0.1

4.4+0.3

6.6-0.2

1

15.9

15.9

252

1.7

29-450-

PC 14×8

14.3-0.5

11.6+0.4

6-0.2

3+0.1

5.6+0.4

8.5-0.3

0.8

20

25

500

3.2

29-500-

PC 18×11

18.4-0.8

14.9+0.5

7.6-0.3

3+0.1

7.2+0.4

10.7-0.3

0.6

25.9

43

1120

6

29-550-

PC 22×13

22-0.8

17.9+0.6

9.4-0.3

4.4+0.2

9.2+0.4

13.6-0.4

0.5

31.5

63

2000

13

29-600-

PC 26×16

26-1

21.2+0.8

11.5-0.4

5.4+0.2

11+0.4

16.3-0.4

0.4

37.5

94

3520

21

29-620-

PC 30×19

30.5-1

25+0.8

13.5-0.4

5.4+0.2

13+0.4

19-0.4

0.33

45

136

6120

36

29-6500-

PC 36×22

36-1

29.9+0.8

16.2-0.4

5.4+0.2

14.6+0.4

22-0.6

0.26

52

202

10600

57

29-674-

PC 42×29

42.4-0.7

36.6+0.6-0.1

17.7-0.6

5.4+0.2

20.3+0.6

29.4+0.2-0.2

0.259

68.6

265

18200

104

29-675-

PC 47×28

47-1.3

39+1.1

20-0.6

5.5+0.2

19+0.6

28-0.6

0.232

72.5

312

22600

120

29-680-

PC 59×36

59.3-1.8

49+1.3

25.5-0.8

5.5+0.2

23.6+0.8

35.6-0.7

0.181

88

485

42600

229

29-690-

PC 80×60

78+2.0

69

33.5-1

9+0.5

43.8+1

60-1

0.164

154.6

945

145700

783

29-200-

PM 50×39

50-1.7

39+1.3

20-0.6

54+0.2

26.4+0.8

39-0.4

0.227

84

370

31000

-

29-2010-

PM 62×4962-2

65-2

48.8+1.5

25.5-0.8

5.4+0.2

33.4+0.8

49-0.4

0.191

109

570

62000

280

29-2020-

PM 74×59

74-2.5

57.5+1.8

29.5-1

54+0.3

40.7+0.8

59-0.6

0.162

128

790

101000

460

Part No.

Core

F58

P11

F5

F5A

F44

F47

F48

F9

F9C

F10

F39

F16

F44A

29-290-

PC 7×4

-

-

-

-

900/R

-

-

-

-

-

-

-

-

29-350

PC 9×5

560/R

1300/R

-

-

1160/R

-

1400/R

2500/R

2700/R

4000/R

5000Y

-

-

29-400-

PC 11×7

780/R

1600/R

-

1880/R

1580/R

1455/R

1600/R

3500/R

3800/R

-

-

-

-

29-450-

PC 14×8

970/R

2300/R

-

2500/R

2090/R

1875/R

2100/R

4600/R

-

-

9800/Y

130±25%

2800/R

29-500-

PC 18×11

1300/R

2900/R

2800/R

3075/R

2600/R

2500/R

-

5600/R

6000/R

6450/R

12600Y

-

3600/R

29-550-

PC 22×13

1710/R

3800/R

-

4650/R

3500/R

-

-

6860/R

-

8600/R

16000Y

-

4400/R

29-600-

PC 26×16

-

5200/R

-

6000/R

4650/R

-

-

9000/R

-

12000/R

20000Y

-

5500/R

29-620-

PC 30×19

-

6300/R

6412/R

7500/R

6000/R

-

-

10500/R

-

14500/R

-

-

6400/R

29-6500-

PC 36×22

-

8400/R

-

-

7600/R

-

-

15200/R

-

-

21000Y

-

-

29-674-

PC 42×29

-

9500/R

-

10500/R

-

-

-

16600±25%

-

-

-

-

-

29-675-

PC 47×28

-

-

10460/R

-

-

-

-

17500/R

-

-

-

-

-

29-680-

PC 59×36

-

12500/R

-

13850/R

-

-

-

-

-

-

-

6500/R

-

29-690-

PC 80×60

-

-

-

-

-

-

-

-

-

-

-

-

-

29-200-

PM 50×39

-

-

7400/R

-

-

-

-

-

-

-

-

-

-

29-2010-

PM 62×49

-

-

9200/R

-

-

-

9200/R

-

-

-

-

-

-

29-2020-

PM 74×59

-

-

10000/R

-

-

-

10000/R

-

-

-

-

-

-

R-+30%, -20%Y-+40%, -30%
All Values mentioned above are for an ungapped pair of cores
Gapped values can be provided on request
Adjusters to suit all the above cores are available on request
All above cores are also available with Solid Center Spigot.
All above cores are available in other materials on request.

MMG India offer a wide range of 4 Slot Pot cores based on the old 'VlNKOR' series. The cores are supplied gapped to an effective permeability range and are adjustable for tuned ﬁlters up to 5MHz. The larger cross-sectional area offered by the 4 Slot range allows for a higher power setting than the conventional 2 Slot version. Also with the advantage of 2 more slots they can be used in applications where 1/2 and 1/4 turns are required. A full range of bobbins and mounting assemblies are also available.

Dimensional Details

Part No.

Core

Amm

Bmm

Cmm

Dmm

Emm

Fmm

Effective Parameters

lemm

Aemm2

Vemm3

P11

29-1040-

14×9

14±0.3

4.50±0.5

11.66±0.25

6.05±0.15

3.63+0.02-0.03

2.90±0.10

18.70

25.90

484

-

29-1080

18×11

18±0.38

11.20±0.10

15.17±0.33

7.94±0.20

4.56±0.09

3.70±0.10

24.70

44.30

1090

3280R

29-1120-

21×14

21±0.05

13.60±0.10

18.08±0.39

9.64±0.23

4.63±0.02

4.40±0.10

30.70

73.20

2220

4290R

29-1160-

25×16

25.4±0.53

21.5±0.44

16±0.10

11.32±0.27

5.33±0.13

5.20±0.10

36.40

99.90

3630

5210R

29-1200-

30×19

39.49±0.61

18.80±0.10

24.4±0.52

13.72±0.33

5.20±Min

6.10±0.10

43.20

153

6590

7270R

29-1240-

35×23

35.5±0.75

22.8±0.12

29.31±0.6

16.2±0.4

5.2Min

7.39±0.1

52.50

223

11700

8690R

29-1280-

45×29

45±0.92

29.20±0.10

37.34±0.79

20.19±0.49

5.225±0.10

9.50±.10

67.00

362

24300

11040R

R+30%, -20%
Gapped values can be provided on request
All above cores are also available with Solid Center Spigot.
All above cores are available in other materials on request.

These cores are used extensively in telecommunications and converter power supply circuits. The wide slot in the lower half of the assembly enables a large number of connections to be brought out. These cores are also referred to as Touch Tone (TT) pot cores as were originally designed for push-button telephone sets.

RM cores arose due the demand for the coil formers with integrated pins that allows for efficient winding and high PCB packing densities. Clamps engaging in recesses in the core base hold the cores place, meaning glue is not normally required in this process All the cores adhere to specifications laid down in IEC 62317-4 and in DIN 41980.

RM cores are designated for two main applications:
- Highly stable, extremely low loss filters inductors and other resonance determining inductors (F58,P11)
- Low distortion broadband transmission at low signal modulation (F39,F10,F9)
RM cores also be supplied without the centre hole. These have a higher AL value and cross sectional area and are used for power applications (F47,F44,F5A)

Dimensional Details

Part No.

Core

Amm

Bmm

Cmm

Dmm

Emm

Fmm

Gmm

Hmm

Effective Parameters

∑l/Amm-1

lemm

Aemm2

Vemm3

ApproxWeight/Setgms/Set

29-900-

RM4

11-0.4

8+0.3

3.9-0.2

2+0.1

7+0.4

10.5-0.2

9+0.25-0.25

9.8-0.4

1.9

21

11

232

1.45

29-700-

RM5

14.6-0.6

10.2+0.4

4.9-0.2

2+0.1

6.3+0.4

10.5-0.2

9+0.25-0.25

12.3-0.5

1

20.8

20.8

430

2.9

29-730-

RM6

17.9-0.6

12.4+0.5

6.4-0.2

3+0.1

8+0.4

12.5-0.2

10.34+0.25-0.25

14.7-0.6

0.86

26.9

31.3

840

4.9

29-7600-

RM7

20.3-0.8

14.75+0.65

7.25-0.3

3+0.1

8.5+0.4

13.5-0.2

11.3+0.25-0.25

17.2-0.7

0.74

29.8

40

1200

6.5

29-790-

RM8

23.2-0.9

17+0.6

8.55-0.3

4.4+0.2

10.8+0.4

16.5-0.2

14.3+0.25-0.25

19.7-0.8

0.67

35.50

52

1850

10.3

29-830-

RM10

28.5-1.3

21.2+0.9

10.9-0.4

5.4+0.2

12.4+0.6

18.7-0.2

16.2+0.25-0.25

24.7-1.1

0.5

42

83

3470

20

29-9xx-

RM12

37.6-1.5

24.9+1.1

12.8-0.4

5.4+0.2

16.8+0.6

24.6-0.2

21.6+0.25-0.25

29.8-1.2

0.39

56.6

146

8340

44

29-880-

RM14

42.2-1.2

29+1

15-0.5

5.4+0.2

20.8+0.6

30.2-0.2

27+0.25-0.25

34.8-1.3

0.35

70

200

14000

72

29-950-

R6

17.6-0.6

12.4+0.4

6.4-0.2

3+0.1

8+0.4

12.5-0.2

10.34+0.25-0.25

14.7-0.5

0.8

25.6

32

820

5.1

Part No.

Core

F58

P11

F5

F5A

F5C

F44

F47

F9

F9C

F10

F39

F44A

29-900-

RM4

-

900R

-

-

-

800R

-

1700R

-

2800R

3700Y

1100R

29-700-

RM5

-

1800R

-

-

2600R

1570R

-

3170R

6000Y

5200R

6700Y

1800R

29-730-

RM6

890R

2000R

2250R

-

3100R

2200R

-

4625R

4270R

6200R

8600Y

2200R

29-7600-

RM7

-

2800R

-

2850R

3400R

2370R

-

4690R

5040R

7000R

10000Y

2700R

29-790-

RM8

1170R

2500R

3000R

4000R

4300R

2906R

-

5700R

5670R

8375R

12500Y

3300R

29-830-

RM10

1600R

3960R

4000R

4490R

3300+60%

3800R

3650R

7600R

8060R

11000R

16000Y

4200R

29-9xx-

RM12

-

-

4400R

8500R

6000R

5000R

4750R

8400R

-

12800R

-

5300R

29-880-

RM14

-

-

-

6600R

6800R

6000R

5400R

9500R

-

-

-

6000R

29-950-

R6

732R

2300R

-

-

-

-

-

4300R

4900R

6000R

8600Y

-

R- +30%, -20%Y- +40%, -30%
All Values mentioned above are for an ungapped pair of cores
Gapped values can be provided on request
Adjusters to suit all the above cores are available on request
All above cores are also available with Solid Center Spigot.
All above cores are available in other materials on request.

R- +30%, -20%Y- +40%, -30%
All Values mentioned above are for an ungapped pair of cores
Gapped values can be provided on request
Adjusters to suit all the above cores are available on request
All above cores are also available with Solid Center Spigot.
All above cores are available in other materials on request.

EE Cores were one of the first ferrite cores to be manufactured, being derived from their respective iron lamination size. Having rectangular limbs they are relatively easy to manufacture and as such a vast range exists in the marketplace. MMG-India's range reflects a selection of cores that have become, over many years, worldwide standards through continued use. E cores are particularly suitable for power transformers and filters at low frequencies. They are not suitable in high frequency applications as the rectangular centre limb leads to higher leakage inductance and winding resistance. EE cores are available in a range of sizes and materials as per IEC 62317-8

Dimensional Details & AL values with Tolerance Code

Part No.

Core

Amm

Bmm

Cmm

Dmm

Emm

Fmm

lemm

Aemm2

Vemm3

F5

F9

F5A

F44

F48

F9C

F10

32-200-

EF12.6

12.6+0.5-0.4

6.5-0.2

3.7-0.3

4.5+0.3

8.9+0.6

3.7-0.3

29.6

13.0

384

-

-

-

760/R

-

-

-

32-040-

E13/6.6/3

12.7±0.25

6.6±0.05

3.18±0.2

5.105±0.155

9.725±0.725

3.18±0.2

31.70

9.68

307

550/R

-

-

-

600/R

-

-

32-370-

E16/8/5

16+0.7-0.5

8.2-0.3

4.7-0.4

5.7+0.4

11.3+0.6

4.7-0.3

37.6

20.1

754

1000/R

1400/R

-

960R

1100/R

-

-

32-140-

E20/10/5

20+0.7-0.4

10.1+0.1-0.3

5.3-0.4

6.5±0.2

13.1±0.3

5.00±0.2

43

31

1330

1500/R

2500/R

-

1390/R

1550/R

-

-

32-180-

EF20/10/6

20.4-0.8

9.95±0.15

5.9-0.4

7+0.3

14.1+0.6

5.9-0.3

44.9

33.5

1500

1300/R

2500/R

-

1300/R

1450/R

-

-

32-160-

E19/8/5

19.3±0.5

8.085±0.115

4.75±0.18

5.75±0.125

14.5±0.53

4.75±0.18

40

22.5

900

-

2160/R

1190/R

970/R

-

2350/R

2650/R

32-190-

E25/13/7

25+0.8-0.7

12.8-0.5

7.5-0.6

8.7+0.5

17.5+0.8

7.5-0.5

57.5

52.5

3020

1750/R

3100/R

-

1712/R

1900/R

-

-

32-030-

E25/9.5/6

25.4±0.63

9.53±0.13

6.27±0.2

6.49±0.19

19.56±0.51

6.27±0.2

48.70

38.10

1860

2000/R

-

1830/R

1480/R

-

-

4000/R

32-130-

E30/15/7

30+0.8-0.6

15.2-0.4

7.3-0.5

9.7+0.5

19.5+0.8

7.2-0.5

67

60

4000

1800/R

3300/R

-

1800/R

-

-

-

32-010-

E34/13/8

34.14±0.86

13.11±0.1

7.87±0.18

8.485±0.205

24.59±0.63

11.12±0.25

62.50

77.4

4840

2240/R

4100/R

-

2360/R

-

-

-

32-020-

E41/22/9

41±1.27

22.28±0.1

8.78±0.19

16.715±0.455

28.58±0.53

11.76±0.20

102

105

10600

-

-

-

2000/R

-

-

-

32-110-

E42/21/15

42+1-0.7

21.2-0.4

15.2-0.5

14.8+0.6

29.5+1.2

12.2-0.5

97

181

17600

3500/R

-

-

3500/R

4200/R

-

-

32-120-

E42/21/20

42+1-0.7

21.2-0.4

20-0.6

14.8+0.6

29.5+1.2

12.2-0.5

98

240

23300

4750/R

-

-

4560/R

-

-

-

32-150-

E55/27/21

55+1.2-0.9

27.8-0.6

21-0.6

18.5+0.8

37.5+1.2

17.2-0.5

120

354

42500

5800/R

10000/R

-

-

6050/R

-

-

32-240-

E65/32/27

65+1.5-1.2

32.8-0.6

26.8+0.6

22.2+0.7

44.2+1.5

20-0.7

147-0.0

532

78200

-

-

10250/R

7430/R

7840/R

-

-

32-250-

E70/32/32

70±1.35

32+0.5

31.75±0.33

21.57±0.17

48.38±0.75

22.13±0.35

146.27

691.03

101076

-

-

11125/R

9060/R

11100

-

-

R- +30%, -20%Y- +40%, -30%
All Values mentioned above are for an ungapped pair of cores
Gapped values can be provided on request
All above cores are available in other materials on request.

Many new electronics equipment will use switched mode power supplies where the voltage transformation unit is integrated on a circuit card. As cards may be racked with minimal clearances. low profile components are necessary. Planar assemblies differ radically from conventional transformers as wire windings are replaced by stacks or flat spiral laminations. In some cases the winding can be replaced by printing circuit tracks, with the E core inserted through the board. The planar E core's low profile shape and ease of construction offers significant advantages including: Fast error-free winding; excellent heat sinking properties and efficient repeatable performance at low cost. All the cores adhere to specifications laid down in IEC 62317-9

Part No.

Core

Amm

Bmm

Cmm

Dmm

Emm

Fmm

Gmm

Effective Parameters

lemm

Aemm2

Vemm3

F44

F48

F47

32-9140-

EE14×3.5×5

14±0.3

3.5±0.1

4.9±0.2

11±0.25

2.9±0.15

2.05±0.15

-

20.70

14.50

300

-

-

1100±25%

32/33-9140-

E+l 14

14±0.3

-

4.9±0.2

-

-

-

1.50±0.05

16.70

14.50

240

-

-

1300±25%

32-9180-

EE18×4×10

18±0.35

4±0.10

10±0.2

14±0.3

3.95±0.15

2.05±0.15

-

24.30

39.50

960

-

-

2700±25%

32/33-9140-

E+l 18

18±0.35

-

10±0.2

-

-

-

2.0±0.1

20.30

39.50

800

-

2900/R

3100±25%

32-9210-

EE22×5.7×15.8

21.8±0.4

5.7±0.1

15.8±0.3

16.8±0.4

4.9±0.2

3.20±0.1

-

32.50

78.50

2550

-

-

4300±25%

32/33-9210-

E+l 22

21.8±0.4

-

15.8±0.3

-

-

-

2.5±0.05

26.1

78.50

2040

-

-

5000±25%

32-9320-

EE31.8×6.3×20.3

31.75±0.64

6.35±0.13

20.32±0.41

25.4±0.5

6.28±0.2

3.23±0.15

-

41.70

129

5380

6425±25%

-

5900±25%

32/33-9320-

E+l 31.8

31.75±0.64

-

20.32±0.41

-

-

-

3.18±0.13

35.90

129

4560

7350±25%

-

6780±25%

32-9380-

EE38.1×8.26×25.4

38.1±0.76

8.26±0.13

25.4±0.51

30.85±0.6

7.6±0.2

4.52±0.2

-

52.60

194

10200

7940±25%

-

7250±25%

32/33-9380-

E+l 38.1

38.1±0.76

-

25.4±0.51

-

-

-

3.18±0.13

43.70

194

8460

9290±25%

-

8500±25%

32-9640-

EE63.8×10.2×50.3

63.8±1.3

10.2±0.13

50.3±1

53.6±1.1

10.2±0.2

5.17±0.2

-

79.70

511

40700

13300±25%

-

12720±25%

32/33-9640-

E+l 63.8

63.8±1.3

-

50.3±1

-

-

-

5.08±0.13

69.60

511

35500

15050±25%

-

14360±25%

All Above Cores are available in clipped version for clamping purpose.

MMG India offers low profile ER cores for SMD transformer application in power, signal and high permeability grades and these cores can also be gapped to suit customer requirements. Key features are; Very low total height, Low stray inductance, and High DC magnetic bias. Suitable applications are; Low power DC-DC converters, Pulse transformers, Broadband transformers, and Driver transformers. Planar ER cores are available in a range of sizes and materials as per IEC62317-9

Part No.

Core

Amm

Bmm

Cmm

Dmm

Emm

Fmm

Gmm

lemm

Aemm2

Vemm3

F44

F47

F48

F49

32-869-

ER 9.5×5

9.5-0.3

7.5+0.25

3.5-0.2

7.00Mini.

5-0.2

1.6+0.15

5-0.2

13.6

8.81

120

740R

720/R

800R

4500Y

32-870-

ER 11×5

11.00-0.35

8.7+0.3

4.25-0.2

7.90Mini.

6-0.2

1.5+0.15

5-0.2

14.1

12.4

174

1100R

-

1200R

6400Y

32-880-

ER 14.5×6

14.5±0.2

11.8±0.2

4.7±0.1

-

6.7±0.1

1.65±0.1

5.9±0.2

19

17.6

333

1500R

-

1500R

-

R- +30%, -20%Y- +40%, -30%
All Values mentioned above are for an ungapped pair of cores
Gapped values can be provided on request
All above cores are available in other materials on request.

ETD (Economical Transformer Design) cores were developed specifically for Power Transformer cores used in Switched Mode power supplies. The combined cross-sectional area of the two outer limbs equals the cross-sectional area of the centre limb allowing an even flux distribution throughout the core. This ensures the absence of localised 'hot spots' that can reduce performance at high frequencies or high flux levels. Their round centre limb provides for minimal winding resistance, leakage inductance and copper eddy current losses. ETD Cores are available in a range of sizes and materials as per IEC 62317-6 together with their associated coil formers (both Horizontal and Vertical mounting) and clips.

Dimensional details & AL Values with Tolerance Code

Part No.

Core

Amm

Bmm

Cmm

Dmm

Emm

Fmm

Effective Parameters

lemm

Aemm2

Vemm3

F5

F9

F5A

F44

F48

F9C

F10

32-580-

ETD29/16/10

30.6-1.6

16+0.4

9.8-0.6

22+1.4

9.8-0.6

10.7+0.6

70.4

76

5376

-

-

2350/R

1950/R

2250/R

-

-

32-500-

ETD34/17/11

34+1-0.6

17.5-0.4

11.1-0.6

25.6+1.4

11.1-0.6

11.8+0.6

78.6

97.10

7640

2400/R

-

2840/R

2250/R

2711/R

-

-

32-520-

ETD39/20/13

38.9+1.1-0.7

20-0.4

12.8-0.6

29.3+1.6

12.8-0.6

14.2+0.8

92.20

125

11500

2700/R

-

3210/R

2470/R

2800/R

-

-

32-540-

ETD44/25/15

43.8+1.2-0.8

22.5-0.4

15.2-0.8

32.5+1.6

15.2-0.8

16.1+0.8

103

173

17800

3300/R

-

3920/R

3100/R

-

-

-

32-560-

ETD49/25/17

48.5+1.3-0.9

24.9-0.4

16.7-0.8

36.1+1.8

16.7-0.8

17.80Mini

114

211

24000

3700/R

-

4400/R

3525/R

4090/R

-

-

32-490-

ETD59/31/22

59.8+1.4

31.2-0.4

22.1-0.9

43.6+2.2

22.1-0.9

22+0.9

139

368

51200

5000/R

-

-

4900/R

5800/R

-

-

R- +30%, -20%Y- +40%, -30%
All Values mentioned above are for an ungapped pair of cores
Gapped values can be provided on request
All above cores are available in other materials on request.

EFD (Economical Flat Design) cores were developed to meet the increasing demand for low profile components in power transformer design. A combination of very low height and excellent throughput power, when compared to other cores of a similar height, make these cores ideal where space considerations are a priority. EFD Cores are available in a range of sizes and materials as per IEC 6231 7-14 together with their associated coil formers and clips.

Part No.

Core

A

B

C

D

E

F

G

lemm

Aemm2

Vemm3

F44

F47

F48

32-720-

EFD 15×8×5

15±0.4

7.5+0.15

4.65±0.15

11±0.35

5.55±0.2

2.4±0.1

5.3±0.15

34

15

510

675R

650R

780R

32-740-

EFD 20×10×7

20±0.55

10±0.15

6.65±0.15

15.4±0.5

7.75±0.2

3.6±0.15

8.9±0.2

47

31

1460

1120R

1075R

1200/R

32-760-

EFD 25×13×9

25±0.65

12.5±0.15

9.1±0.2

18.7±0.6

9.3±0.25

5.2±0.15

11.4±0.2

57

58

3300

1790R

1720R

2200R

R- +30%, -20%Y- +40%, -30%
All Values mentioned above are for an ungapped pair of cores
Gapped values can be provided on request
All above cores are available in other materials on request.

EP Cores have a particularly compact, low profile shape and offer excellent shielding from adjacent cores due to the winding being almost completely surrounded by the ferrite core. This allows for high packing densities on printed circuit boards. Originally designed for broadband, small power transformers and signal transmission applications, EP cores are well suited for the demanding properties required from modern electronic components.
EP Cores are available in a range of sizes and materials as per IEC 62317-5.

All Dimensional Details in mm.

Part No.

Core

A

B

C

D

E

F

lemm

Aemm2

Vemm3

32-810-

EP7

9.4-0.4

7.2+0.4

3.4-0.2

6.5-0.3

5+0.4

7.5-0.2

15.7

10.3

162

32-820-

EP10

11.8-0.6

9.2+0.4

3.45-0.3

7.85-0.4

7.2+0.4

10.4-0.2

19.2

11.3

217

32-800-

EP13

12.8-0.6

9.7+0.6

4.5-0.3

9-0.4

9+0.4

13-0.3

24.2

19.5

472

32-830-

EP17

18.4-0.8

11.6+0.8

5.85-0.35

11.25-0.5

11+0.6

17-0.6

28.5

33.9

966

32-840-

EP20

24.5-1

16.1+0.8

9-0.5

15.3-0.7

14+0.6

21.6-0.4

40

78

3120

32-850-

EOP7

9.2±0.2

7.4±0.2

3.3±0.1

8.8±0.2

4.8±0.2

7.4±0.1

15.6

17.7

276

All Values with Tolerance Code.

Part No.

Core

P11

F5

F5A

F44

F44A

F47

F48

F9

F10

F39

FTA

32-810-

EP7

980/R

1200/R

1200/R

920/R

1100/R

960/R

1100/R

2000/R

3400/R

5200/Y

5200/Y

32-820-

EP10

940/R

-

1063/R

855/R

1100/R

980/R

980/R

2000/R

3200/R

4800/Y

-

32-800-

EP13

1500/R

1275/R

1460/R

1235/R

1600/R

1300/R

1400/R

2800/R

4400/R

7000/Y

7000/Y

32-830-

EP17

2250/R

2300/R

-

2130/R

2400/R

-

2400/R

4300/R

6875/R

11400/Y

-

32-840-

EP20

-

-

4100/R

4000/R

-

-

3900/R

6700/R

11200/R

18700/Y

-

32-850-

EOP7

-

-

-

-

-

-

-

-

-

-

8780/Y

R- +30%, -20%Y- +40%, -30%
All Values mentioned above are for an ungapped pair of cores
Gapped values can be provided on request
All above cores are available in other materials on request.

These cores are used for the construction of transformers in the frequency range from 10 to 500 kHz. The transferable outputs will be determined by core geometry and the upper frequency limits by the material selected. In previous years a major application was for in line transformers producing an electron deflection beam for CRT's. Materials used for these applications are characterized by high flux density, low specific power losses and the decline of losses dependent on temperature in the range from 200 to 1000C.

Ring cores or Toroids manufactured from ferrites offer an efficient shape for variety of wide band, pulse, power transformers and inductors. Toroids Cores are available in a range of sizes and materials as per lEC 62317-12

Dimensional details & AL Values with Tolerance Code

Part No.

Core

Amm

Bmm

Cmm

lemm

Aemm2

Vemm3

F5A

P12

F8

F9

F9C

F14

F19

F5C

F10

F39

F47

F48

F44

F16

F57

F5

28-0611-

T4.5×2.5×2.0

4.5±1.8

2.495±0.125

2.0±0.18

-

-

-

-

470±30%

-

-

940/R

-

-

-

-

-

-

-

-

-

-

-

28-119-

T5.8×3×3.05

5.84±1.6

3.05±0.13

3.05±0.13

13.029

4.108

53.52

-

-

-

-

1900/R

-

-

-

-

-

-

-

764/R

-

-

-

28-001-

T6.35×3.18×1.52

6.35±0.19

3.17±0.15

1.52±0.13

13.81

2.32

32.05

-

-

-

-

1052/R

-

-

-

-

-

-

-

399-30%

-

-

-

28-002-

T6.35×3.18×3.96

6.35±0.19

3.17±0.15

3.96±0.25

13.82

6.049

83.57

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

28-003-

T6.35×3.18×7.92

6.35±0.19

3.17±0.15

7.93±0.3

13.80

12.06

116

-

1983Mini

1322Mini

4820±20%

-

242/R

-

-

-

-

-

-

-

-

-

-

28-107-

T10×6×4

10±0.4

6±0.30

4±0.2

24.70

7.84

188.70

-

-

-

-

2046/R

-

-

-

2460/R

-

-

-

-

-

-

-

28-011-

T12.7×6.35×3.18

12.7±.30

6.35±0.25

3.17±0.25

27.6

9.68

268

-

-

-

-

-

-

-

-

2645/R

-

-

-

-

-

-

-

28-012-

T12.7×6.35×6.35

12.7±0.3

6.35±0.25

6.35±0.3

27.65

19.37

535.7

-

-

1317/R

3864/R

4401/R

193/R

-

-

4224Mini

7570±0.30

-

-

-

-

-

-

28-013-

T12.7×6.35×9.52

12.7±0.3

6.35±0.25

9.52±0.36

27.6

29.04

804

-

-

-

-

-

290/R

-

-

-

-

-

-

-

-

-

-

28-017-

T12.7×7.1×5.0

12.85±0.45

7.35±0.25

5±0.25

30.13

13.45

405

-

-

-

2486±25%

-

-

-

-

-

-

-

-

-

-

-

-

28-018-

T12.7×7.1×6.35

12.85±0.45

7.35±0.25

5±0.25

30.13

17.02

513

-

-

-

-

3548±25%

-

-

-

-

-

-

-

-

-

-

-

28-0627-

T12.7×7.2×3.2

12.7±0.32

7.3±0.3

3.3±0.18

2.962

0.08858

0.2623

-

-

-

-

1500/R

-

-

1130±20%

-

-

-

-

-

-

-

-

28-019-

T12.7×7.9×6.35

12.7±0.32

7.9±0.15

6.35±0.2

31.17

14.96

466

1507/R

-

-

-

3020/R

-

442/R

-

2800Mini

4600Mini

-

-

-

-

4500±25%

-

28-059-

T16.7×9.6×5.0

16.76±0.5

9.65±0.25

5±0.25

39.45

17.33

683

-

-

-

1943Mini

2730±25%

-

-

-

-

5520/Y

993/R

-

-

-

-

-

28-063-

T16.7×9.65×6.35

16.76±0.5

9.65±0.25

6.3±0.25

39.45

21.84

864

-

-

-

3055/R

3470/R

-

-

-

4165/R

-

-

-

1320/R

-

-

-

28-076-

T17.5×9.6×28.5

17.5±0.5

9.6±0.3

28.52±0.6

40.11

109.3

4386

-

-

-

-

-

-

-

-

-

-

-

-

-

3921±20%

-

-

28-023-

T19.05×12.7×9.52

19.05±0.16

12.7±0.51

9.52±0.36

48.50

29.88

1449

-

-

930Mini

3410/R

3880/R

-

-

-

-

-

-

-

-s

-

-

-

28-0116-

T20×10×6.8

20.45±0.55

10±0.2

6.8±0.2

43.98

34.05

1497.5

-

-

-

4189/R

4860/R

-

-

-

-

-

-

-

1790/R

-

-

-

28-095-

T22.1×13.7×12.7

22±0.3

13.72±0.25

12.70±0.25

54.08

51.61

2791

2400Mini

-

5277/R

6110±20%

-

-

1196±30%

-

7125/R

10000±30%

-

-

-

-

-

-

28-0631-

T24×12×6

24±0.50

12.18±0.40

6±0.25

52.26

34.59

1808

-

-

-

-

3330-30%

-

-

-

-

-

-

-

-

-

-

-

28-055-

T24×12×12

24±0.6

11.85±0.35

11.85±0.35

51

69.57

35.85

-

-

-

-

8571/R

366/R

-

-

-

-

-

-

-

-

-

-

28-141-

T36×23×16

36.4±1.1

22.6±0.9

15.4±0.8

89.65

95.89

8597

-

-

-

-

-

-

-

-

-

13600Y

-

-

-

-

-

-

28-044-

T38.1×25.4×15.87

38.1±1.52

25.4±1.02

15.87±0.30

97.06

99.41

9650

3217/R

-

-

5663/R

6500±20%

-

-

-

-

-

-

-

2445/R

-

-

-

28-043-

T38.1×25.4×19.05

38.1±1.52

25.4±1.02

19.05±0.41

97.10

119.40

11580

-

-

2480±25%

6830/R

7725/R

341/R

-

-

-

13285±30%

-

-

2935/R

-

-

-

28-029-

T45×19×16

45±1.0

19±1

16±0.5

89

195.4

17370

5000/R

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

28-089-

T54×15×19

54±2.10

15.6±0.6

19.0±0.4

85.72

321.72

27594

-

-

-

21200/R

-

1070±20%

-

14600/R

-

-

-

-

-

-

-

-

28-052-

T56×32×18

55.4±1.6

32.4±0.7

18±0.7

131.5

202.10

26578

-

-

-

7724+20%-20%

-

-

-

-

-

-

-

-

-

-

-

-

28-061-

T36×38×25

63±2

38±1.2

25±0.3

152

305.93

46530

6319/R

-

-

11100/R

12640+20%-20%

-

-

-

15160±20%

-

-

5450/R

-

-

-

5054/R

28-0797-

T78×45×14

78±1.91

44.65±1.32

14±0.40

181.6

231.8

42098

-

3210±30%

-

-

6410+20%-20%

-

1600+20%-20%

4810±20%

-

-

-

-

-

-

-

-

28-0660-

T102×66×15

102±2.0

65.8±1.3

15±0.5

255.32

367.21

68225

-

-

-

-

-

-

-

-

7890/R

-

-

-

-

-

-

-

R- +30%, -20%Y- +40%, -30%
All values mentioned above are for an un coated Ring core
All the above cores are available in epoxy coating to provide dielectric break down strength
Ring cores below the size of 6mm are available in paralyene coating
Cores are also available enamel coated for identification purposes only.They can be either fully or partially coated and no breakdown strength can be guaranteed
For coated cores the AL Value and dimensional tolerance changes
Gapped Ring cores are available on request
All above Cores are available in other materials on request